/*
 * Copyright 2020 Makani Technologies LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define _POSIX_C_SOURCE 199309L  // For clock_gettime.

#include "avionics/linux/clock.h"

#include <stdint.h>
#include <time.h>
#include <unistd.h>

int64_t ClockGetUs(void) {
  struct timespec ts;
  clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
  return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
}
